[js] Update test for node 6.9.x (where a number is a valid input as a…

… file

descriptor)

javascript/node/selenium-webdriver/test/io_test.js

@@ -307,7 +307,7 @@ describe('io', function() {
  });
 
  it('catches errors from invalid input', function() {
- return io.read(1234)
+ return io.read({})
  .then(() => assert.fail('should have failed'),
  (e) => assert.ok(e instanceof TypeError));
  });